464 results about "Misinformation" patented technology

The invention relates to the fields of computer vision and artificial intelligence, in particular to the field of intelligent video analysis, and provides a video/audio intelligent analysis management control system. The invention aims to solve the problems of the existing intelligent video analysis system of high misinformation rate, high report missing rate, low accuracy, single working mode, failure of realizing transmission and storage as required, and the like. The system comprises a video/audio feature database, a video/audio acquisition module, a video/audio quality improvement module, a video/audio feature extraction module, a video/audio feature recognition module, a video/audio management control trigger rule judgment module and a video/audio real-time management control platform. The system has three working modes: front-end analysis, back-end analysis and distributed analysis. The system combines voice information and image information for intelligent analysis, thereby effectively reduces the misinformation rate and report missing rate of the intelligent video analysis system. The invention enhances the quality of the video/audio information and establishes a large target and behavior feature database, thereby enhancing the system accuracy and realizing management control as required.

The invention discloses a multi-measure network abnormity detection method based on a relative entropy theory. In the detection method, an integrative relative entropy is obtained by weighting the relative entropy of a plurality of measures to judge network abnormity, thereby avoiding the problem of single-point malfunction of single-measure detection under a certain specific attack; simultaneously, abnormity detection based on the relative entropy is different from the abnormity detection of the flow rate, and the abnormity of the measures can be accurately reflected. The method is concretelyactualized according to the following steps: step 1, selecting and quantifying the measures for abnormity detection; step 2, preprocessing data; step 3, training a sample; step 4, detecting the single-measure relative entropy; step 5, calculating the multi-measure weighting relative entropy; and step 6, displaying an alarm mechanism and a detection result. The technical scheme provided by the method is beneficial to solving the problems of insufficient attack detection range and contravention between the detection rate and the misinformation lowering rate existing in the prior network abnormity detection technique and can provide various network environments, such as a host machine, a local area network, a wide area network and the like, to carry out network circuit abnormity detection.

The invention provides an anti-peeping system, which is applied to a financial self-service device. The anti-peeping system comprises an image acquiring and processing module, an anomaly detection module and an alarm module. The image acquiring and processing module comprises an image acquiring controller, at least a pair of image sensors and an image processing unit and is used for acquiring original image data and rebuilding three dimension so as to acquire distance information of each image relative to the financial self-service device. The anomaly detection module comprises a human-face detection unit and a view angle calculation unit and is used for detecting whether multiple human faces exist or not and calculating a view angle range watched by human eyes so as to judge whether the human faces watch an operation panel or a display screen. The alarm module is used for conducting response to detection results of the anomaly detection module so as to warn whether current customers are peeped or not. By means of the scheme, the accuracy rate of judging peepers can be improved greatly, and the misinformation rate of an alarm is reduced.

The embodiment of the invention discloses a method for identifying clustered regularly interspaces short palindromic repeats (CRISPR). The method comprises the following steps: according to a DR (Direct Repeats) template in a source file, determining a first-generation CRISPR; after the missed DR in an undetermined spacer sequence between two pieces of adjacent first-generation CRISPR is added, determining a second-generation CRISPR; determining the CRISPR of which the SPACER similarity is lower than a preset threshold value in the second-generation CRISPR as a third-generation CRISPR; and determining the third-generation CRISPR of which two ends are provided with the DR as a four-generation CRISPR. The embodiment of the method can reduce misinformation or ignore the cut-off DR so as to improve the identification accuracy and comprehensiveness of the CRISPR.

The invention relates to the technical field of satellite fault diagnosis and fault-tolerant control, and proposes a fault diagnosis method, which has very good robustness to external interference, isfree of influence of external interference in a fault diagnosis process, prevents generation of misinformation and missing report, and can effectively estimate fault severity. According to the satellite fault diagnosis and fault-tolerant control method based on a self-adaptive observer, first a satellite kinematics and dynamics model under an actuator fault and external interference influence isestablished to analyze influence of fault effective factors on a system; secondly, an observer is designed for a satellite fault system, a residual error evaluation function is established based on observer output and system actual output, an evaluation threshold value is obtained, and the purpose of fault detection is achieved; then, when occurrence of a fault is detected, a self-adaptive observer is designed to complete a fault diagnosis task; and finally, based on an estimated value of the fault, a finite time self-adaptive fault-tolerant controller is designed. The satellite fault diagnosis and fault-tolerant control method based on a self-adaptive observer is mainly applied to fault diagnosis and fault-tolerant control occasions.

The invention provides a method and system for recognizing a vehicle brand based on an image. The method and system can carry out multi-dimensional position detection in the image to fast recognize the vehicle brand, are high in detection rate and have little misinformation.

The invention provides a web back door detection method and device based on behavioral characteristics. The method comprises the following steps of: step S1_1, obtaining file attribute information of a script file under a web catalogue; determining an attribute abnormality of the script file according to file establishing time, a file owner or a file authority limit in the file attribute information; and identifying the script file with the attribute abnormality which meets pre-set requirements into a back door file; step S1_2, counting an accessing frequency, accessing source quantity or different-time accessing amount of each script file from a web log and determining an accessing abnormality; and identifying the script file with the accessing abnormality which meets pre-set requirements as the back door file; and step S1_3, utilizing an operating system to monitor a progress of a web server; judging whether a pre-set operation or order exists; and if so, identifying the script file which sends out the operation or the order as the back door file. The web back door detection method and device based on the behavioral characteristics can effectively detect an encrypted and deformed wed back door based on a detection manner of the behavioral characteristics, so that the relevance ratio and the detection efficiency are improved and the misinformation rate is reduced.

The invention discloses a method and a device for identifying SQL (Structured Query Language) injection attacks, wherein the method comprises the steps of establishing an SQL injection feature library based on SQL syntax elements and SQL syntax fields through SQL lexical and syntactic analysis, obtaining target data, performing the SQL lexical and syntactic analysis on the target data and obtaining all SQL syntax elements and SQL syntax fields included in the target data, next, matching all of the obtained SQL syntax elements and SQL syntax fields included in the target data with the SQL injection feature library, and if matching is successful, determining the existence of the SQL injection attacks. The method and the device are capable of improving the efficiency of identifying SQL injection and reducing misinformation and failures in report.

The invention discloses a sensor self-checking system of an intelligent driving vehicle. The sensor self-checking system is an integrated multi-sensor self-checking system, when states of all sensors of the intelligent driving vehicle are detected, self-checking results of all the sensors are integrated, the checking results are classified, sense redundancy brought by multiple sensors with the same classification is utilized, sensor fault testing and detection are further conducted, and the comprehensive sensor state of the intelligent driving vehicle is reasonably judged. The invention further provides an intelligent driving vehicle multi-sensing fusing system, the sensor self-checking system completes self-checking and state judgment of an integrated sensor, and self-checking information sent by the sensor self-checking system is utilized to be subjected to information fusing processing at the same time, according to a dynamic result of sensor self-checking and with the combination of a planning controlling algorithm, a sensitive degree of misinformation and a missing report are subjected to intelligent fusing, and the intelligent driving vehicle is helped to make a more reasonable plan and controlling strategy.

The invention discloses a self-adaptive warning system for intelligently addressing circumferential intrusions of fiber Bragging grating. The self-adaptive warning system consists of a fiber Bragging grating vibration sensor, an optical transmission cable, a fiber grating signal demodulator and a security centralized control platform. When in detection, a plurality of the fiber Bragging grating vibration sensors with different wavelengths are connected in series with one optical fiber by the wavelength division multiplexing technology to acquire the distributed information; by acquiring and processing the fiber grating signals, the fiber Bragging grating vibration sensors are integrated with the application software of an upper computer into an intelligent management system to form a set of ideal and complete self-adaptive warning system for the fiber circumferential intrusion security. The system can be applied to the circumference intrusion warning guard, and can be used as the environmental sensing device by the circumferential intrusion of the intelligent addressing. The invention adopts the outdoor all-passive network type transmission system, so that the sensing region can be addressed freely. The passive transmission and the optical cable laying are applied to the system, so that the system is convenient for the on-site installation and no device debugging is needed on site; in particular, the invention has the advantages of suitability of the outdoor laying, lightning and flash resistance and anti-electromagnetic interference, capability of sufficiently meeting and being applied to the circumference security in various complex environments, capability of accurately solving the misinformation and the report missing and the like.

A system and method of detecting a source of a rumor in a social media network is disclosed. The social media network includes a plurality of node clusters, each of the plurality of nodes therein having at least one edge connection to a corresponding number of different nodes in the same cluster. The system identifies a plurality of gateway nodes, each having at least one weak tie connection with a corresponding gateway node from a different node cluster; selects a subset of gateway nodes as sensors to measure arrival times of a rumor; and selects a candidate node cluster based on these arrival times. From there, the system selects a set of nodes in the candidate cluster to measure arrival times of a rumor from a source node, and selects a candidate node from the candidate cluster as having a high probability of being the source node.

The present invention provides a security signal alarming system, mainly including a detector, a security alarming system, multiple camera guns, a video collector, a family gateway, a network server, a communication network and an user terminal, the camera gun is connected to the video collector via common analog video wire, the video collector and the family gateway are connected by unshielded twisted pair, the gateway is accessed in internet by radio card and communicated with the network server, the network server is communicated with the user terminal by the communication network. When the security alarming system alarms, the system processes alarming signal by family gateway, at the same time collecting video signal and sending alarming information to user, sending request video information by mobile phone or PDA terminal, observing condition of the monitoring site at any time and strengthening interactive of the security system and human, resolving the fateful fault of the misinformation in the present alarming system, and grasping the condition of monitoring point when the user not in the site.

The invention discloses a method of monitoring faults in sections for an intermittent control system and relates to a fault monitoring method. Firstly, a plurality of batches of collected intermittent process data are standardized in a way of expanding variables, and a data matrix on each sampling time is subjected to principal component analysis; secondly, a fuzzy C-means clustering is a fuzzy clustering analysis method which is suitable for soft partition and is generated through combining a fuzzy set theory and a k-means clustering; and thirdly, after segmentation is finished, an improved MPCA (Multiway Principal Component Analysis) model with a time varying principal element covariance on the basis of expanding variables is established on each subphase, then when on-line monitoring is carried out, which phase a new batch of data belongs to is judged, whether the data exceeds the fault monitoring control limit or not is calculated and judged, if so, a fault occurs, and the fault monitoring in sections ends. According to the invention, process multi-phase partition is more accurate, misinformation and missing report rates in monitoring are reduced, and the practical application and operability are strong.

The embodiment of the invention discloses an insulated gate bipolar transistor-driven protective circuit which comprises a signal transmission circuit, a gate pole driving circuit, a voltage detecting circuit and a blocking time setting circuit, wherein the signal transmission circuit is used for transmitting a driving signal to the gate pole driving circuit; the gate pole driving circuit is used for amplifying the driving signal from the signal transmission circuit, and then driving an insulated gate bipolar transistor to act through the amplified driving signal; the voltage detecting circuit is used for transmitting a fault indicator signal to the blocking time setting circuit once the voltage between a collecting electrode and an emitting electrode of the insulated gate bipolar transistor is detected over a set voltage threshold, wherein the voltage threshold is more than the driving voltage of the insulated gate bipolar transistor; the blocking time setting circuit is used for transmitting a locking signal to the signal transmission circuit after receiving the fault indicator signal from the voltage detecting circuit; and the signal transmission circuit also can be used for blocking and outputting the driving signal to the gate pole driving circuit after receiving the locking signal from the blocking time setting circuit. With adoption of the insulated gate bipolar transistor-driven protective circuit, misinformation of a short circuit fault can be avoided.

The invention discloses an inflection point compensation measurement method of vehicle track information. The method comprises a vehicle state judging step, an inflection point judging step and a data uploading step, wherein the inflection point judging step comprises: continuously measuring the turning angle between each two points, calculating the sum alpha of the turning angles of N continuous measurement points, and determining to enter a turning state if the absolute value of alpha is larger than beta; the data uploading step comprises: intermittently uploading data with frequency K1 after entering the turning state, and recovering the data uploading frequency to default frequency K0 when the turning state is finished, wherein K1 is larger than K0; beta is a preset angle threshold, and N is a preset judging number. By adopting the inflection point compensation measurement method of vehicle track information disclosed by the invention, the inflection point compensation mechanism is increased on the basis of isochronous or equidistant collection, a collection point is increased only when vehicle turning is detected so as to reduce the transmission data size of GPRS (General Packet Radio Service), and angles of continuous sampling points are accumulated and calculated to overcome the possible misinformation under small curvature and large turning radius.

A monitoring and alarm device for fatigue driving of an automobile is used for monitoring and prompting the fatigue state of a driver and overcomes the defects of misinformation and concealed information of the existing monitoring devices caused by changes of surroundings, operating states and driver's positions. The monitoring and alarm device is composed of an electrocardiosignal acquisition electrode, an electrocardiosignal processor, an alarm, a work power supply and connecting wires among the parts, wherein the electrocardiosignal acquisition electrode is in a wire mesh structure and divided into two sections which are bilaterally and symmetrically attached to the surface of a steering wheel sleeve, and two sections of electrodes are mutually insulated. The electrocardiosignal processor comprises a filter, an amplifier, an analog digital converter (ADC) conventional electric signal sorting circuit and a single chip microcomputer (SCM) which is used for calculating and analyzing heart rates and heart rate variability (HRV) index signals. The alarm uses a sound and light alarm module. The monitoring and alarm device has the advantages that physical states of drivers are reflected accurately; information extraction and processing and alarm processes are convenient, quick and not easy to interfere; and failed information and misinformation can be avoided.

The embodiment of the invention relates to a method and a device for detecting a worm virus and gateway equipment. The method comprises the following steps: obtaining scanning connection information initiated by a source IP address host computer, wherein the scanning connection information comprises scanning connection times, a scanning connection failure rate and the connection number of scanning ports; and analyzing the obtained scanning connection information of the source IP address host computer in a preset period and judging whether the source IP address host computer is a host computer infected with the worm virus or not. By analyzing the scanning connection information, the technical scheme of the embodiment of the invention can effectively detect whether the source IP address host computer is the host computer infected with the worm virus or not, and has higher virus detection efficiency and lower virus detection misinformation rate.

The invention provides a motor train unit bogie instability detection device and a realization method and belongs to the technical field of motor train unit control. The realization method comprises the following steps: a central processing unit is connected with an acceleration sensor by a 4-20mA current interface to obtain acceleration change information of the acceleration sensor at a detected position; a working state and instability information of the sensor are output through a current ring or an MVB interface after a filtering algorithm and instability judgment are carried out; a switching value instability signal is output by an IO port; and meanwhile, recorded data are stored in a data storage device. According to the motor train unit bogie instability detection device, acceleration information of the detected position can be fed back in real time so that the controllability and the operability are improved, misinformation can be further prevented and the train safety is improved.

The invention discloses a method and a device for detecting an automobile motion state by using an acceleration sensor. The method comprises the following steps of: detecting an acceleration value of an automobile by using the acceleration sensor, wherein the acceleration value includes an X-axis acceleration value, a Y-axis acceleration value and a Z-axis acceleration value; acquiring an acceleration value within a preset time, and carrying out statistic and statistic analysis process on the acceleration value within the preset time, so as to obtain the statistic information within the preset time; matching the statistic information with a preset state model; and determining the state corresponding to the preset state model as the motion state of the automobile when the statistic information is matched with the preset state model. According to the embodiment of the invention, the automobile state is judged according to statistic characteristics of data output from the acceleration sensor, the possibility of misinformation or report miss is reduced, and moreover, a current operation speed value of the automobile can be estimated or the state that whether the door is opened or closed can be identified.

The invention discloses a method for testing software by applying across function analysis, which solves the problem of influences on interval precision caused by function calls, underutilized environment constraint information, control flow change caused by abnormal handling and the like in a software static test. Decision methods for detecting different defects in a program are correspondingly specified by defining function summary information as well as pre-information, post-information, constraint information and characteristic information of the function summary information; and the summary information of all functions in the tested program is output after the test is completed by collecting the function summary information and applying the function summary information to statement nodes of a control flow graph and the process of determining defect modes in the process of testing the software. Experiments prove that compared with the conventional testing software, the testing software of the method has the test result which has higher analysis accuracy among functions and lower misinformation rate and information missing rate.

The invention discloses a method and an apparatus for monitoring internal storage of an application program, and electronic equipment. The method for monitoring the internal storage of the application program comprises the steps of additionally requesting an internal storage monitoring space with preset size from the internal storage when the application program applies an internal storage operating space; recording the current internal storage allocation information in the additionally requested internal storage monitoring space in allocating the applied internal storage operating space; and recording the current internal storage releasing information in the additionally requested internal storage monitoring space in releasing the applied internal storage operating space. By virtue of the technical scheme, the problem of performance degradation caused by slow program operating due to misinformation, report failure, or complexity of an instrumentation realization method or algorithm can be solved, thereby improving reliability of the result, and solving many problems existing in C/C++ program internal storage use; and in addition, high usability in complex large-scale application programs is realized, and the use cost is relatively low.

The invention discloses a method of fully detecting null pointer reference defects. The method comprises recognizing all addressable expressions of an application to be detected based on an abstract syntax tree; carrying out conservative interval arithmetic and pointer analysis on the application to be detected according to a control flow diagram, and generating a procedural summary according to results of the interval arithmetic and the pointer analysis; recognizing all pointer reference and referred pointers according to the procedural summary and the abstract syntax tree, and creating a null pointer reference defect state machine example on each referred pointer; and running the null pointer reference defect state machine examples based on the control flow diagram, carrying out state transition on each defect state machine example on each node of the control flow diagram according to the results of the interval arithmetic and the pointer analysis, and carrying out null pointer reference detection. By adopting the method of fully detecting the null pointer reference defects, the problem of failing to report the null pointer reference defects can be effectively solved, and zero omission and low misinformation of the null pointer reference defect detection are achieved.

The invention provides a data race detection and evidence generation method based on multithreaded program constraint building. The data race detection problem is converted into a constraint solving problem by building a constraint expression according to the multithreaded program semanteme, a constraint solver is used for detecting possible data races and program execution paths triggering the data races are generated; the data race detection and evidence generation method comprises the steps of firstly, carrying out the instrumentation of the detected program, executing the program and obtaining an execution path, secondly, converting the execution path into a quantifier-free first-order logic expression covering all feasible thread interleaving according to the multithreaded program execution semanteme, thirdly, building a data race candidate set according to the sequential relationship of statements when a data race happens and generating candidate conditions for races, and finally, traversing the candidate set to determine whether the data race exists, and if so, generating a corresponding evidence sequence. The method is capable of finding out all data races in once operation without misinformation; for each data race, the evidence sequence indicating the trigger process of the data race is generated.